TV-Series
Description
Christiana Leta Rosebreia, often called Tia or the "Princess Knight," is a major character in the story. She is a beautiful woman with long, silky ash-blonde hair and striking green eyes, carrying herself with an air of noble elegance.

Her background is marked by profound tragedy. She was once a princess and the finest knight of a small, prosperous star nation. Her world was destroyed by the Goaz Pirate Crew. In a desperate attempt to save her people, she surrendered to the pirate leader Goaz, who had promised to rescue her homeland. Instead, Goaz betrayed her, taking her captive and subjecting her to horrific inhumane experiments and torture that transformed her body into a monstrous shape, leaving her with no hope and only a desire for death.

This hellish existence came to an end when Liam Sera Banfield defeated the Goaz pirates and rescued her. While she initially begged for death, Liam instead used a rare and precious elixir to completely restore her to her original, healthy form. This act of salvation forged an unbreakable bond. Christiana swore absolute and eternal loyalty to Liam, becoming the first knight formally inducted into the Banfield family service.

Personality-wise, Christiana is defined by her fierce, near-obsessive devotion to Liam. She is extremely serious about her duties as a knight and is highly competent, but her loyalty often manifests as wild and fanatical zeal. She can be prone to daydreaming about her master and getting carried away, leading to unpredictable behavior. While she is brave, caring toward her people, and deeply determined, she also shows a much more aggressive side. She utterly despises pirates, driven by a thirst for revenge for the destruction of her homeland, and is often at the forefront of any mission to hunt them down.

In terms of role and abilities, Christiana is one of the most powerful knights in the empire, with her combat skills said to be second only to Liam himself. She excels in piloting mobile knights and is a master of weaponry, particularly the rapier. Her capabilities extend beyond the battlefield; she is also highly intelligent and possesses significant political acumen. While studying for her imperial knight qualifications, she was considered a potential successor to the imperial chancellor, a position she refused out of unwavering loyalty to Liam.

Her key relationships are central to her character development. Her relationship with her savior, Liam, is one of total devotion, though he remains seemingly unaware of the obsessive love she holds for him. She has an intense and often hostile rivalry with Marie, another of Liam's close followers. This rivalry is so extreme that they have clashed openly, with both attempting to secure Liam's "genes" by trying to have his child. This led to Christiana being demoted from her position as chief knight to the role of a maid. Despite this demotion, her heroic actions in a later battle earned her a new title as Knight Number 5. Despite the trauma of her past, she is later reunited with refugees from her destroyed nation, who still love and respect her, providing her with a new source of emotional strength.